Typewriter construction



Feb. 9 1926. 1,572,159

G. F. ose

TYPEWRITER CONSTRUCTION Filed Dec. 19. 1921 fil o yew 31 W 4;; ATTORNEYPatented Feb. 9, 192 6.

GEORGE I3. BOSE, OF HYND$VILLE, NEW YORK.

TYPENRITER CONSTRUCTION.

Application filed Becemberw, 1921. Serial No. 523,317.

T 0 all whom it may concern: Be it known that I, Gnonon F. ROSE, ofHyndsville, in the county of Schoharie and State of New York, a citizenof the United States,have invented certainneiv and useful Improvementsin Typewriter Construction; and Ido hereby declare the following to be afull, clear, and exact description of the same, reference being had tothe accompanyinn drawings, forming a part of this specification, and tothe reference numerals marked thereon. l

This invention relates to typewriting machines and moreespecially to thestriking type bar variety, the chief object being to provide anetficient supporting means for the type, bars affording precision in thelocation and movement of the latter, which means may be readily stampedup from sheet metal and which is thereforeeconomical in material and incost of manufacture. To these and other ends the invention resides incertain improvements and combinations of parts all as will hereinafterbe more fully described, the'novel featuresbeing pointed out in theclaims at the end of thespecifica- .tion. In the drawings:

Figure 1 is a side elevationiof a. type vrit ing machine embodying; thepresent invention, with parts broken away-and in section; FigureQ is anenlarged front elevation of the type bar supporting means detached; IFigurefo is a section on the lineZi 3" of Figure 2;

Figure 4t is section on Figureg; and 1 y Figure 5 is a sectlou on theliuep ii of re l 1 Similar reference numerals throughout the severalviews indicate the samepart f The invention is embodied in, the presentinstance, by Way ofillustration. in conjunction ivith a vell knownvariety of typewrits ing' machine comprising; main frame indithe line 4of cated generally at 10, on the rear portion of,

which is supported a travelingz; workv riage 11 provided with, a rollerplaten 12. At 13 is indicated ribbon supporting and feeding mechanism.Key levers are indicated at i l, arranged in banks and supported on asuitable bridge lfi carried by the main frame. The rear. ends of the heylevers are connected by actuating link means 16 with type bars shown.atil'? which, are pivot ally supported on the main frame for strik-Serial No,

- ing movementtoivard and from the platen,

in vhich movement they engage and operate carriage spacing mechanism. 1

The present improvement resides in means for 'movably supporting andguiding type bars 17on the main frame. As well understood in the art,the bars require support by means insuring not only the accurate positioning of the same but also precise guiding of the movements of thebars so that all ofthe type will strike accurately in the printingposition. lVhil-e the type bars must be precisely guided in theirmovements, as stated, this must be accomplished without undue frictionalresistance, to which end it ends may be lobated and inclined for thepurposes set forth in my said co pending application 521,227, filedDecember 9, 1921, ror typewriters. The type bar supporting means propercomprises a one piece sheet .metal sector or member indicated generallyat 19 formed from a plate of-arcuate shape indicated in Figure 2, whichis stan'lped up and forn'iedas hereafter described to provide bearingsfor the type barsfandis seon the transverse support 18. of the curedfrai'ne, in the position indicated infhigure 1,

as by ineaizsof screws or rivets 20.

Plate 19 prcferablylhas its hmgitudinally extending central portionstamped up as best shown in l grures and 5 to provide a projettion orrib 21 of substantially Ushape at one or both sides of which the metalis formed to provide stiffening ang'les oroil'sets 22 and flanges 23..The flanges in the present instance are perforated as at 24 for the.re-

ception of the screws or ivets securing; the same to the frame support18.

. The hearingfor the type bars is formed by drawing the metal adjacentthe center of rib 21 inwardly, or in a reentrantdirection as at 95,, soas to provide a recess 26 extending longitudinally from. end to end ofthe supporting pla e and thustransversely of the machine." In thebearing portion thus formed in rib 21 is carried a pintle means orreception of the respective type bars which are supported and guided inthese slots. The latter are not carried deep enough, however, to cutinto the offsets 22 and flanges 23; it'being important for purposes ofstiffness to maintain these intact. 'The slots are out after the plateis stamped up as described and are preferably subsequently milled orfinished to the precise dimensions desired to provide an accurateguiding fit with the type bars. The latter have their rear ends ofsubstantially circular shape as indicated at 30 with a concentricopeningthrough which the pintle means or rod 27 is passed after the typebars are located in their respective guide slots 29.

The above described'type bar support embodies a substantially one piececonstruction which can be stamped up from ,sheetmetal and assembledeconomically with respect to cost of labor as well as materials, andaffords the advantage of a light weight which is particularly importantin machines of a portable type. It is evident from the form of thearcuate plate shown and described that the supporting means is not onlyrigid in character but permits of.v the accurate milling orfinishing ofthe bar receiving slots'29, and also of the bearing recess'26."if 'ne'cesary, in fived relation to eaeh'othe'r, soas to insure precisepositioning of the levers and precise guiding of their movements.

I claim as my invention: I

1. In a .typewrit'ing machine, the cornbrnation with a framea'nd aplurality of type bars, of a one-piece, sheet'metalmember on the framehaving aportion thereof stamped I up angularly to form guide means and asecond portion in substantially spaced relation with said first portionstamped up to form a bearing for pivot means, with spaced guide slotscut through said guide means and bearing for the reception of saidtypebars, and means pivotally supporting said bars on said bearing portion.

2. In a typewriting machine, the combination with a frame and pluralityof'type bars,'of a one piece sheet metal member carried bythe framehaving a longitudinally extending portion thereof stamped up to form aprojecting rib with the metal of a portion of the latter drawn inwardlyto form a bearing, said rib being cut by a plurality of guide slotsforthe reception of the type bars, and means on said type bars pivotallysupporting the same on said bearing in their respective guide slots.

8. In a typewriting machine,the combination with a frame and apluralityof type bars, of a one piece sheet metal member carried by the framehaving its longitudinally extending central portion stamped up insubstantially U,-shape with a reentrant portion forming a bearing, saidU-shaped portion being cut by a plurality of guide slots for thereception of the type bars, and means on the latter pivotally supportingthe same on said bearing portion.

4. In a typewriting machine, the combin'ationwitha frame and a pluralityof typo bars, of a one piece sheet metal member carried by the framehaving a longitudinally extending portion thereof stamped up to form aprojecting rib with the metal of a portion of the latter drawn inwardlyat different distances to form a bearing and keeper means therefor, saidrib having guide slotsw cut therethrough for the reception of the typebars, and. pintle means inserted in said bearing beneath said keepermeansfor pivotally supporting the, type bars. I

5. In'a typewriting machine, the combination with a frame having atransversely extending support and; a plurality of type bars, of a onepiece sheet metal member extending transversely of the frame withflanges at its sides secured to said support and with is centralportion'"between' said flanges stamped up to form "a rib having abearing portion thereiin saidrib having g'uide 'slots'cuttherethrouglrfor the reception of said type bars and pintle meanscarried in said beari g porti'nfor pivotally suppo'rting said typebars'.

' '6; In aj typewriting'machine, the combination with a frame and aplurality of type bars, of a one piece sheet metal member carried by theframe having a"longitudinally extending" portion thereof stamped up toforma projecting rib provided with a bearing and having also stiffeningoffsets and flanges at the sides of said rib with said ing guide slotscut therein for the reception of said type bars, and means pivotally supporting said bars on saidbearing.

7. In a typewriting machine, the combination with a'frame and aplurality of type bar'syof anarcuate sheet'metal strip on saidframe'having a longitudinally extending, central portion thereof stampedup to form a bearing fo'r'pi'ntle meansand having a second portion inparallel spaced relation with the first portion stamped up in adirection transverse to saidb'earing to form guide. means, with spacedslots cut'transversely of saidbearing through the latter and said guidemeans for the receptionof saidv type bars, and pintlemeans'supportingsaid bars" on said bearing portion.

flanges secured to' the frame, said rib hav- 8. In a typewritingmachine, the combination with a frame and a plurality of type bars, ofan arc-shaped sheet'metal plate on the frame stamped up from a singlepiece of material to provide a rib having a portion thereof formed toafford a bearing and a stiffening ofiset, said rib and bearing portionhaving guide slots cut transversely therethrough for the reception ofthe type bars and pintle means for pivotally supporting said type barson said bearing portion. i

9. In atypewriting machine, the combination with a frame and a pluralityof type bars, of an arc-shaped sheet metal plate on the frame stamped upin substantially U- shape with a reentrant port-ion forming a bearing,said U-shaped portion having a plurality of slots cut transverselytherethrough for the reception of said type bars, and means on thelatterpivotally supporting the same on said bearing portion.

10. In a typewriting' machine, the combination with a frame havinatransversely extending support and a plurality of type bars of anarc-shaped sheet metal plate extending transversely of the frame andstamped up to form a rib portion with stiffening offset and side flangessecured to said support and with a portion of said rib portion drawninwardly to form a bearing, said rib portion having guide slots outtherethrough for the reception of-said type bars and arc-shaped pintlemeans in said bearing pivotally supporting said type bars in theirrespective slots.

GEORGE F. ROSE.

